Security analysis of a chaos-based image encryption scheme

摘要

This paper introduces a security analysis of a chaos-based image encryption scheme. An attack system is proposed to discover the security weaknesses of the chaotic encryption scheme. Convergence of the attack system is proved using master-slave synchronization. Future evaluation of the encryption scheme is obtained from a scalar time series where the only information available are the structure of the encryption scheme and a scalar time series observed from the chaotic system. Simulation and numerical results verifying the feasibility of the security analysis method are given.